Proportional Relationships Review

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How can you identify if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio in a proportional relationship, often represented as 'k'.

Front

If y is proportional to x, and y = 6 when x = 2, what is the constant of proportionality?

Back

The constant of proportionality is 3, since 6/2 = 3.

Front

Toby brings his math teacher 3 brownies every week. How many brownies will Toby's math teacher receive in 5 weeks?

Back

15 brownies.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the constant of proportionality between flour and sugar?

Back

The constant of proportionality is 2/3.

Front

The Williams family bought four concert tickets for $252. What was the price per ticket?

Back

$63.00 per ticket.

Front

What does it mean if a relationship is non-proportional?

Back

A non-proportional relationship does not have a constant ratio between the two quantities.

Front

If the constant of proportionality is $4, what is the total cost for 5 items?

Back

$20, since 4 * 5 = 20.

Front

How do you find the constant of proportionality from a graph?

Back

You find the constant of proportionality by determining the slope of the line that represents the relationship.